Colorado Tax Brackets 2026
Colorado state income tax rates for tax year 2026 — a flat 4.4% on all taxable income.
Tax year
2026
Type
Flat
Rate range
Flat 4.4%
Brackets
1
Colorado state tax at common incomes (2026)
| Taxable income | Single — tax | Single — effective | MFJ — tax | MFJ — effective |
|---|---|---|---|---|
| $50,000 | $2,200 | 4.40% | $2,200 | 4.40% |
| $75,000 | $3,300 | 4.40% | $3,300 | 4.40% |
| $100,000 | $4,400 | 4.40% | $4,400 | 4.40% |
| $150,000 | $6,600 | 4.40% | $6,600 | 4.40% |
| $250,000 | $11,000 | 4.40% | $11,000 | 4.40% |
| $500,000 | $22,000 | 4.40% | $22,000 | 4.40% |
State income tax only. Excludes federal tax, FICA, and local/city taxes. Assumes taxable income (after deductions).
About Colorado's rates
Colorado imposes a flat 4.4% state income tax rate on federal taxable income (reduced from 4.55% in 2023 under TABOR surplus refund mechanisms). The flat rate applies uniformly, with no progressive brackets and no local income taxes. Colorado also allows a sizable state standard deduction that matches the federal standard deduction.
Planning note
Colorado's flat 4.4% rate plus TABOR refunds often produce an effective rate below the stated bracket for many taxpayers. When comparing Colorado to neighboring states, factor in the TABOR surplus mechanism — it can reduce the effective rate by 0.1–0.3 percentage points in refund years.
View 2025 Colorado tax brackets for comparison.
Frequently asked questions
What are the Colorado tax brackets for 2026?
Colorado has a flat state income tax of 4.4% for tax year 2026 — applied to all taxable income regardless of filing status.
What is the top Colorado income tax rate in 2026?
4.4%.
How much Colorado state tax on $100,000 in 2026?
A single filer with $100,000 of taxable income owes $4,400 in Colorado state income tax for 2026 — an effective rate of 4.40%. Married filing jointly with the same income owes $4,400 (4.40% effective). Federal tax is separate.
Are Colorado 2026 tax brackets the same as 2025?
Bracket thresholds may have changed for 2026 via inflation indexing or legislative action. The figures on this page are the Colorado bracket thresholds in effect for tax year 2026.
Explore more Colorado tax info
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